diff --git a/README.md b/README.md
index a5aea438..480eb2a2 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,15 @@ dataset(topic, dataset)
 
 ### covid-19
 
-Source: [hamburg.de](https://www.hamburg.de/corona-zahlen)
+#### Sources
+
+Since July 27, 2020:
+
+[hamburg.de](https://www.hamburg.de/corona-zahlen)
+
+Before July 27, 2020:
+
+[Robert Koch Institut](https://www.rki.de/DE/Content/InfAZ/N/Neuartiges_Coronavirus/Situationsberichte/Gesamt.html)
 
 #### datasets
 
diff --git a/src/covid-19/infected.csv b/src/covid-19/infected.csv
index 4247dd9c..372b00ae 100644
--- a/src/covid-19/infected.csv
+++ b/src/covid-19/infected.csv
@@ -3,3 +3,29 @@ deaths,new,recordedat,recovered,total
 230,18,2020-07-29,5000,5355
 230,11,2020-07-28,5000,5337
 230,4,2020-07-27,5000,5325
+,18,2020-07-26,,5322
+,13,2020-07-25,,5304
+,16,2020-07-24,,5291
+,24,2020-07-23,,5275
+,7,2020-07-22,,5251
+,3,2020-07-21,,5244
+,1,2020-07-20,,5241
+,0,2020-07-19,,5240
+,3,2020-07-18,,5240
+,5,2020-07-17,,5237
+,-1,2020-07-16,,5232
+,2,2020-07-15,,5233
+,0,2020-07-14,,5231
+,0,2020-07-13,,5231
+,1,2020-07-12,,5231
+,0,2020-07-11,,5230
+,-1,2020-07-10,,5230
+,1,2020-07-09,,5231
+,6,2020-07-08,,5230
+,1,2020-07-07,,5224
+,3,2020-07-06,,5223
+,0,2020-07-05,,5220
+,3,2020-07-04,,5220
+,5,2020-07-03,,5217
+,1,2020-07-02,,5212
+,7,2020-07-01,,5211